curl -i -X GET "https://graph.facebook.com/oauth/access_token?grant_type=fb_exchange_token& client_id={app-id}& client_secret={app-secret}& fb_exchange_token={short-lived-user-access-token}"
curl -i -X GET "https://graph.facebook.com/oauth/access_token?grant_type=fb_exchange_token& client_id={app-id}& client_secret={app-secret}& fb_exchange_token={short-lived-user-access-token}"